<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>react脚手架</title>
  <link rel="stylesheet" href="/css/bootstrap.css">
  <!-- <link rel="stylesheet" href="./css/bootstrap.css"> -->
  <!-- <link rel="stylesheet" href="%PUBLIC_URL%/css/bootstrap.css"> -->
  <style>
    .demo {
      background-color: red !important;
      color: #FFF !important;
    }
  </style>
</head>

<body>
  <div id="root"></div>
</body>

</html>